Eutectic salt mixture-assisted sodium-vapor-induced synthesis of Pt–Ca nanoparticles, and their microstructural and electrocatalytic properties

Abstract

We have fabricated Pt–Ca nanoparticles with oxygen reduction reaction catalytic activity via a sodium vapor-induced synthesis method. Prior addition of NaCl to form a eutectic mixture of CaCl₂ and NaCl facilitated the formation of intermetallic Pt₂Ca nanoparticles. Pt₃Mg and Pt₅Sr nanoparticles also were suggested to be producible.